write-number
wayland/nextion/write-number
Write to a numeric attribute of an object.
write-number
@/write-number
Write to a numeric attribute of an object.
DEV@/nextion-serial
A nextion device.
CMDstring
Command. Specify object and attribute to be written. For example, va0.val will overwrite the value attribute of the object named va0.
VALnumber
Number to be written.
UPDpulse
Update.
Donepulse
Pulse on write.
C++ implementation
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_UPD>(ctx))
return;
// Get a pointer to the `EasyNex` class instance
auto eznex = getValue<input_DEV>(ctx);
auto xString = getValue<input_CMD>(ctx);
int N=length(xString) + 1;
char cString[N];
for(int i=0;i<N;i++)
cString[i]=0;
dump(xString, cString);
uint32_t val = getValue<input_VAL>(ctx);
eznex -> writeNum(cString, val);
emitValue<output_Done>(ctx, 1);
}
}